Squeezing the lever of a hydraulic disc brake actuates a piston inside the master cylinder (that mass of metal between the lever and handlebar). The piston moves brake fluid toward the brake caliper (that neat little box perched above the disc itself) and the fluid builds pressure within the brake system. The brake fluid pushes against the backs of a set of pistons inside the caliper, moving them toward the rotor. Friction—the basis of stopping—is created. (Physics lesson: A larger rotor correlates to improved leverage and thus more braking power.)
"The key to modulation is controllable power, not an on-off feel," says Hayes production manager Rich Travis. "For every millimeter of movement at the lever, we want increased clamp force at the caliper. You want a lever that will engage gradually, yet will still give you kick-ass ending power for emergency situations." Heat, the byproduct of friction at the brake pads and rotor, represents the nemesis of hydraulic disc brake performance. As the brake fluid warms, it expands, creating unwanted pressure in the brake system. A phenomenon known as lever pump occurs when the over-pressurized brake fluid pushes back against the piston in the master cylinder.
Welcome to U.S. Industrial Machinery. Below you will find a list of our hydraulic press brake models, ranging in size from 22 tons to 440 tons, 4' length to 13' length.
For jobs that don't require such controls and benefit more from keeping it simple, we offer MANUAL hydraulic press brakes. These machines have a front-operated POWER backgauge and ram adjust with digital readouts and fine adjustment handwheels for both, making this a powerful machine that is easy to understand.
|Noun||1.||hydraulic brake - brake system in which a brake pedal moves a piston in the master cylinder; brake fluid then applies great force to the brake pads or shoes|
brake cylinder, hydraulic brake cylinder, master cylinder - a cylinder that contains brake fluid that is compressed by a piston
brake pedal - foot pedal that moves a piston in the master brake cylinder
brake system, brakes - a braking device consisting of a combination of interacting parts that work to slow a motor vehicle
disc brake, disk brake - hydraulic brake in which friction is applied to both sides of a spinning disk by the brake pads
drum brake - hydraulic brake in which friction is applied to the inside of a spinning drum by the brake shoe
foot brake - hydraulic brake operated by pressing on a foot pedal